Seed Germination and Storage of Six Woody Bamboo Species in Yunnan, China

YANG Han-qi; LIANG Ning; LI Chun-fang; LI Ti-chu; SUN Mao-sheng

The germination and storage characteristics of bamboo seed (caryopsis) were tested with six bamboo species including Dendrocalamus asper (JA et JH Schult) Backer ex Heyne (nut-like caryopsis), D.sinicus Chia et JL Sun (typical caryopsis), D.membranaceus Munro (nut-like caryopsis), Schizostachyum sp. (typical caryopsis), Qiongzhuea tumidinoda Hsueh et Yi (berry-like caryopsis), and Chimonocalamus pallens Hsueh et Yi (typical caryopsis). No dormancy was observed during the process of germination of these seeds. The fresh and ripe seeds begin to germinate in 5 15 days after sowing, and finish within 15 days. The results of test showed that the field germination rates were: 84.0% (D.asper), 81.0% (D.membranaceus), 43.3% (D.sinicus), 73.5% (S.sp.) and 25.0% (Q.tumidinoda). The medium, MS+BA 0.5+NAA 0.2, was the best for the bamboo seed germination. The germination rate of seed stratified at 20℃~25℃ was significantly higher than that at 4℃. Sowed after 10 days' soaking in water, the seed germination rates of D.asper, D.membranaceus, S.sp. and Q.tumidinoda dropped to 0 5.5%. When stored at 4℃ or at 20℃~25℃ with humidity of 10%-15%, the seed germination rates of these six bamboos decreased gradually and dropped to 0~4.0% after 90 days. It could increase seed lifespan of Ch.pallens when stored in soil at 4℃.

1. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China

2. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China

3. Southwest Forestry University, Kunming 650224, Yunnan, China

Received Date: 2013-06-28

Abstract: The germination and storage characteristics of bamboo seed (caryopsis) were tested with six bamboo species including Dendrocalamus asper (JA et JH Schult) Backer ex Heyne (nut-like caryopsis), D.sinicus Chia et JL Sun (typical caryopsis), D.membranaceus Munro (nut-like caryopsis), Schizostachyum sp. (typical caryopsis), Qiongzhuea tumidinoda Hsueh et Yi (berry-like caryopsis), and Chimonocalamus pallens Hsueh et Yi (typical caryopsis). No dormancy was observed during the process of germination of these seeds. The fresh and ripe seeds begin to germinate in 5 15 days after sowing, and finish within 15 days. The results of test showed that the field germination rates were: 84.0% (D.asper), 81.0% (D.membranaceus), 43.3% (D.sinicus), 73.5% (S.sp.) and 25.0% (Q.tumidinoda). The medium, MS+BA 0.5+NAA 0.2, was the best for the bamboo seed germination. The germination rate of seed stratified at 20℃~25℃ was significantly higher than that at 4℃. Sowed after 10 days' soaking in water, the seed germination rates of D.asper, D.membranaceus, S.sp. and Q.tumidinoda dropped to 0 5.5%. When stored at 4℃ or at 20℃~25℃ with humidity of 10%-15%, the seed germination rates of these six bamboos decreased gradually and dropped to 0~4.0% after 90 days. It could increase seed lifespan of Ch.pallens when stored in soil at 4℃.

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Seed Germination and Storage of Six Woody Bamboo Species in Yunnan, China

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